Type-writing machine



4 Sheets-Sheet 1. B. A. BROOKS. TYPE WRITING MAGHINE.

Patented July 13, 1897.

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B. A. BROOKS. TYPE WRITING MACHINE.

No. 586,351. Patented July 13,1897.

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B. A. BROOKS. TYPE WRITING MACHINE.

No. 586,351. Patented July 13, 1897.

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B A BROOKS TYPE WRITING MACHINE.

No. 586,351. Patented July 13, 1897.

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By his Attorney "ma uoarus Finn: co. Puma-undo wmlncrcm a. c.

UNITED STATES PATENT OFFICE.

BYRON A. BROOKS, OF BROOKLYN, N. Y., ASSIGNOR TO THE IVYOKOFF, SEAMANS &BENEDICT, OF ILION, NEIV YORK.

TYPE-WRITING MACHIN E.

SPECIFICATION forming part Of Letters Patent No. 586,351, dated July1.3, 1897.

Application filed July 7, 1896. Serial No. 598,309. (No model.)

To all whom, it may concern.-

Be it known that I, BYRON A. BROOKS, a citizen of the United States, anda resident of Brooklyn, in the county of Kings and State of New York,have invented certain new and useful Improvements in Type-\VritingMachines, of which the following is a specification.

This invention relates to means for obtaining a double-space movement ofthe papercarriage when an operator may depress simultaneously aletter-key and the space-key, as at the end of a written word, so as tothereby avoid the necessity of making separate space movements toseparate the finished word from the next word to be written; and myinvention consists in the various features of construction andcombinations of devices, all hereinafter more fully described, andparticularly pointed out in the appended claims.

In the accompanying drawings, Figure 1 is a rear sectional view taken atthe line as w of Fig. 2. Fig. 2 is a vertical longitudinal section takenat the line y y of Fig. 1. Fig. 3 is a perspective detail view moreclearly errhibiting the construction and arrangement of the parts. Fig.4 is an enlarged perspective View of the escapeinent devices and thestops used in conjunction therewith, the parts being in positions ofrest. Fig. 5 is a similar view of the upper portion of the escapementmechanism, showing the action of the parts at a certain stage of theoperation of double spacing. Fig. 6 is a view similar to Fig. 5, showingthe parts at a certain stage of the operation of single spacing; andFig. 7 is a front elevation of the stops detached.

. In the several views the same part will be found designated by thesame numeral of reference.

1 designates the letter-key levels, which by suitable rods or links 2are connected to typebars 3, pivoted in hangers on thetop plate 4.Extending across the machine and beneath the key-levers 1, which arefulcrumed on a bar 5 at the rear of the machine, is a universal bar 6,which is connected at its ends by wires 7 to laterally-extending arms 8on the L-shaped dog holder or rocker 9, which is pivoted at its ends onconical screws or centers 10, and which is provided with a returningspring 11, all in the usual manner.

At the upper portion of the dog-rocker is attached by a screw 12 therigid dog 13 and by a pivot 14 the movable feeding-dog 15. Both saiddogs are adapted to cooperate with a circular rack or escapement-wheel16, fixed on the rear end of a shaft 17, having a bear ing 13, andprovided at its inner end with a pinion 19, adapted to gear with astraighttoothed bar 20 on the paper-carriage, which in its entirety isdesignated by the numeral 21, and which, being of well-knownconstruction, need not be described in detail.

The rigid dog 13 is slotted or cut away at its top, so as to provide thetwo parallel oblique walls or faces 22 and 23 and the straight wall orface 24 parallel with the front side of the dog. The dog 15 is providedwith a spring 25, which tends to throw it toward the right, viewed fromthe rear of the machine,

and said dog is also provided with a backstop 26, mounted on or forminga part of the clog-rocker. The pivoted spring-acted dog 15 standsnormally in engagement with the escapement-wheel, which tends to turn inthe direction of the curved arrow at Fig. 5 under the pull of thecarriage-driving power,'and which power, being greater than thedogspring 25, causes the escapement-wheel to hold said dog 15 in uprightposition and against its back-stop during disuse of the keys.

At near the upper end of the dog-rocker is attached an arm, striker, orcontact device 27, which in the preferred form shown consists of a head28, a shank 29, secured to the dog-rocker by a binding-screw 30, and twoantifriction-rolls 31 and 32, mounted in upright positions at the frontof the head 28. These rolls are adapted to strike or contact with twovertically-arranged plates or stops 33 and 34, disposed in the sameplane and having preferably a common pivot 35, which is attached .to thedepending frame portion or plate 36, which supports the dog-rocker. Thepivoted or hinged stops 33 and 34 are connected together by a coiledspring 37, whose ends are attached to studs38, projecting rearwardlyfrom said stops, which at their inner ing-plate 36.

chine under but out of reach of all of thekeylevers, and pivoted at 44to the stop 34 is another connecting-rod 45, which at its lower end isattached to another bail 46, having rearwardly-extending arms 47, whichare pivoted at 48 to inward extensions of the framework.

49 designates the space key or bar, which is mounted at the outer endsof two levers 50, arranged at the extreme sides of the machine and fulcrumed on the rear cross-bar 5. These space-key levers 50 are adaptedto actuate the universal bar 6 and the bail 43, but not the bail 46,which is shorter than the bail 43 and does not extend out to the planesof the spacekey levers. The shorter bail 46 is adapted to be actuatedonly by the letter-key levers 1, and which are also adapted to actuatethe universal bar.

Vhen a letter-key is depressed, as in the writing of a word, thedog-holder is rocked and the pivoted spring-acted dog 15 moved forwardout of engagement with the escapement-wheel or circular rack 16, and therigid dog 13 is moved over to cooperate therewith, a tooth of the rackstriking the upper portion of the dog at 51, as shown at Fig. 6, thespringacted dog 15 at the same time vibrating to ward the right, viewedfrom the back of the machine.

YVhen the letter-key is released, the dogholder is rocked rearwardly byits spring, and as soon as the rigid dog leaves the engaging tooth ofthe rack the carriage feeds one letter-space, the next tooth to saidengaging tooth operating at this time upon or in engagement with thepivoted dog and acting to vibrate said dog toward the left and againstits back-stop, which arrests the feed movement of the carriage.

During the vibration of any letter-key the bail 46 is carried downthereby and the pivoted stop or plate 34 is vibrated toward the left,but the other plate or stop 33 at this time remains in its normalposition and abuts the roll 31 and prevents the dog-rocker from movingforward too far, or, in other words, the said plate or stop 33, when theletter-keys alone are actuated, operates to limit the vibration of thedog-holder, and hence restrict the carriage-feed to a one-spacemovement.

The depression of the letter-keys does not effect a vibration of thebail 43, which occupies a horizontal plane below that of the bail 46 andis built up at its ends, as at 52, to-

about the level of the space-key levers 50. This bail 43 descends onlyunder the pressure of the space-key levers. Therefore when theletter-keys levers are actuated the stop 33 remains in its normalposition. As the spacekey levers do not act upon the bail 46, when thespacekey is pushed down only the stop or plate 33 is vibrated, the stop34 remaining in its normal position to arrest the forward vibration ofthe dog-holder, the roller striking against said stop and, as before,the escapement mechanism is restricted to yield a nearly strike thestop-supporting plate 36."

\Vhen this occurs, a tooth of the rack enters the slot or cut-away atthe upper portion of the rigid dog, as shown at Fig. 5, and is arrestedby the oblique or angular wall 22 thereof, and at the same time thespring-acted dog 15 is vibrated toward the right, as shown in saidfigure. As soon as the pressure on the keys is released the said obliqueor slanting portion 22 of the dog is acted upon by the engaging tooth ofthe rack, which being now unrestrained and acting under thecarriagedriving power enables the said engaging tooth to cam or wedgeback the said dog and dogholder, and at this time the said engagingtooth and the next succeeding tooth pass through the notch or cut-awayto the other side of the rigid dog, while the succeeding or third toothengages with the pivoted dog and brings it back to normal positionagainst its stop, as shown at Fig. 4. The rack or escapement wheel beingthus permitted to turn the... distance of two teeth, the carriage is feda.

distance equal to two letter-spaces when the action just described takesplace. Thus it will be seen that a construction is provided whereby whenany letter-key alone is depressed and whereby when the space-key aloneis depressed only a single-letter-space movement of the carriage isobtained, but

that when any letter-key and the space-key are simultaneously depresseda double-letter space movement of the carriage is obtained, and allwithout the employment of additional or auxiliary keys and withoutaltering in any manner the usual mode of operation of the space-key orof the letter-keys.

The stops and their connected bails are re turned to normal position bythe spring 37. The rolls 31 and 32 are provided to reduce resistance toreturnmovement of the plates or stops 33 and 34, and to further avoidfriction and shocks the edges of the plates or stops are beveled, asshown at 40.

At Fig. 3 I have shown arrows without feathers, arrows with plainfeathers, and arrows with shaded feathers to illustrate the operation ofthe devices.

\Vhen a letter-key and the space-key are struck together, as indicatedby the connected unfeathered arrows, both the plates or stops 33 and Sivibrate, as indicated by the two unfeathered arrows at said plates orstops. When a letter-key is depressed alone, as indicated by theunshaded feathered arrow, the stop or plate 34 vibrates in the directionindicated by a similar arrow thereat, and when the space-key isdepressed, as indicated by the shaded feathered arrow, then the plate orstop 33 vibrates in the direction indicated by a like arrow at saidplate or stop.

The features of construction herein set forth and claimed maybe embodiedin other forms, styles, or types of machines than the Remington No. 6herein illustrated without departing from the spirit of my invention,and various changes in detail construction and arrangement may likewisebe made Without departing from the gist of my improvements.

\Vhat I claim as new, and desire to secure by Letters Patent, is-

1. In a type-writing machine, the combination of a paper-carriage, anescapement mechanism therefor, a pair of independent stops to limit themovement of said escapement mechanism, letter-keys all of which areconnected to one of said stops, and a space-key connected only to theother of said stops; substantially as set forth.

2. In a type-writing machine, the combination of a paper-carriage, anescapementmechanism including a-rocking dog-holder, a pair ofindependent stops for limiting the vibration of said dog-holder, a bailconnected to one of said stops and adapted to be actuated by all of theletter-key levers, and a second bail connected to the other of saidstops and adapted to be actuated only by the space-key lever;substantially as set forth.

3. In a type-writing machine, the combination of a paper-carriage, anescapement mechanism including a rocking dog-holder, a pair ofindependent pivoted stops, one adapted to be actuated by the letter-keysonly and the other only by the space-key, and means for returning saidstops to their normal positions; whereby when any letter-key alone isdepressed, or when the spacekey alone is depressed only asingle-letter-space movement of the carriage is obtained, but whenanyletter-key and the space-key are simultaneously depressed adouble-letter-space movement of the carriage is obtained substantiallyas set forth.

4. In a type-writing machine, the combination of a paper-carriage, anescapement mechanism, a pair of pivoted stops, a bail connected to oneof said stops and adapted to be actuated by all of the letter-keys only,a second bail connected to the other of said stops and adapted to beactuated by the space-key only; whereby when any letter-key alone isdepressed, or when the space-key alone is depressed only asingle-letter-space movement of the carriage is obtained, but when anyletter-key and the space-key are simultaneously depressed adouble-letter-space movement of the carriage is obtained substantiallyas set forth.

5. In a type-writing machine, the combination of a paper-carriage, anescapement mech anism including a rocking dog-holder having a contactdevice provided with antifrictionrolls, a pair of independent pivotedstops, a pin or pins for holding them in normal position, a spring orsprings for returning them to normal position, a connecting-rod attachedto each of said stops, a bail connected to each of said connecting-rods,the letter-keys, and the space-key; substantially as set forth.

6. In a type-writing machine, the combination of a paper-carriage, anescapementmechanism comprising essentially a toothed wheel, a dog-rockerhaving a pivoted spring-acted dog and a rigid dog provided with a slotor cutaway and with an oblique or slanting wall, stops for normallylimiting the vibration of said dog-rocker so as to insure singlespacing, and means for removing said stops so as to obtain doublespacing; substantially as set forth.

7. In a type-writing machine, the combination of a paper-carriage havinga toothed bar, a pinion engaging therewith, an escapementwheel connectedto said pinion, a dog-hold er having a pivoted spring-acted dog and arigid dog provided with a slot or cut-away for the passage of the teethof said escapement-wheel, and with an inclined or oblique Wall to enablesaid escapement-wheel to Wedge back the dog-holder, a pair of stopsadapted to limit the forward vibration of said dog-holder, letter-keysconnected to one of said stops, and a space-key connected to the otherof said stops; substantially as set forth.

8. In a type-writing machine, the combination of a paper-carriage havinga toothed bar, a pinion engaging therewith, an escapementwheel connectedto said pinion, a dog-holder having a pivoted spring-acted dog and arigid dog provided with a slot or cut-away for the passage of the teethof said escapement-wheel and with an inclined or oblique wall to enablesaid escapement-wheel to wedge back the dog-holder, a pair of pivotedindependent stops, a bail connected to one of said stops, letter-keysadapted to actuate said bail only, a second bail connected to the otherof said stops, and a space-key adapted to actuate said bail only;substantially as set forth.

Signed at New York city, in the county of New York and State of NewYork, this 3d day of July, A. D. 1896.

BYRON A. BROOKS. Witnesses:

JAcoB FELBEL, K. V. DONOVAN.

